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Influence des lois de mouvement sur les déformationset les vibrations des machines à grande vitesse
Daniel Brun-Picard
Journal:

Mechanics & Industry / Volume 6 / Issue 4 / July 2005

Published online by Cambridge University Press:

28 September 2005, pp. 417-423

Print publication:

July 2005
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Lorsqu'on cherche à réduire les écarts de suivi de trajectoire, la structure de la machine est astreinte à des accélérations susceptibles d'engendrer des déformations et des vibrations d'autant plus intenses que la vitesse exigée est élevée. Le choix de la trajectoire et de la loi de mouvement n'est pas anodin car, selon les cas, on peut observer des différences substantielles d'amplitude de déformation et de vibration. Il s'agit alors de déterminer des trajectoires et des lois de mouvement réalistes, que les asservissements soient capables de suivre sans erreur de poursuite ni vibration induite. Différentes voies de génération de lois de mouvement optimisées sont présentées, avec une analyse du gain qu'elles peuvent apporter.